| Element name |
Ion name |
Charge | Ion symbol |
| chlorine | chloride | -1 | Cl-1 |
| hydrogen | hydrogen | +1 | H+1 |
| oxygen | oxide | -2 | O-2 |
| sodium | sodium | +1 | Na+1 |
| neon | -- | 0 | Ne |
| carbon | carbon | +4 | C+4 |
| magnesium | magnesium | +2 | Mg+2 |
| calcium | calcium | +2 | Ca+2 |
| fluorine | fluoride | -1 | F-1 |
| iron | ferric | +3 | Fe+3 |
| copper | cupric | +2 | Cu+2 |
| aluminum | aluminum | +3 | Al+3 |
| sulfur | sulfide | -2 | S-2 |
| potassium | potassium | +1 | K+1 |
| bromine | bromide | -1 | Br-1 |
| phosphorus | phosphide | -3 | P-3 |
| nitrogen | nitride | -3 | N-3 |
| helium | -- | 0 | He |
| silver | silver | +1 | Ag+1 |
| cobalt | cobaltous | +2 | Co+2 |
| barium | barium | +2 | Ba+2 |
| lead | plumbic | +4 | Pb+4 |
| iodine | iodide | -1 | I-1 |
| zinc | zinc | +2 | Zn+2 |
| mercury | mercuric | +2 | Hg+2 |
| arsenic | arsenous | +3 | As+3 |
| nickel | nickelous | +2 | Ni+2 |
| argon | -- | 0 | Ar |
| silicon | silicon | +4 | Si+4 |
| tin | stannic | +4 | Sn+4 |
| krypton | -- | 0 | Kr |
| lithium | lithium | +1 | Li+1 |
| boron | boron | +3 | B+3 |
| beryllium | beryllium | +2 | Be+2 |
| xenon | -- | 0 | Xe |
| Polyatomic ions | |||
| -- | hydroxide | -1 | OH-1 |
| -- | sulfate | -2 | SO4-2 |
| -- | nitrate | -1 | NO3-1 |
| -- | phosphate | -3 | PO4-3 |
| -- | chromate | -2 | CrO4-2 |
| -- | chlorate | -1 | ClO3-1 |
| -- | carbonate | -2 | CO3-2 |
| -- | acetate | -1 | C2H3O2-1 |
| -- | ammonium | +1 | NH4+1 |
Remember an ion is an element that has gained or lost an electron, and so has an electrical charge. Elements are all neutral or have zero valence. The chemical and
| Element name |
Ion name |
Charge | Ion symbol |
| chlorine | chloride | -1 | Cl-1 |
| hydrogen | hydrogen | +1 | H+1 |
| oxygen | oxide | -2 | O-2 |
| sodium | sodium | +1 | Na+1 |
| neon | -- | 0 | Ne |
| carbon | carbon | +4 | C+4 |
| magnesium | magnesium | +2 | Mg+2 |
| calcium | calcium | +2 | Ca+2 |
| fluorine | fluoride | -1 | F-1 |
| iron | ferric | +3 | Fe+3 |
| copper | cupric | +2 | Cu+2 |
| aluminum | aluminum | +3 | Al+3 |
| sulfur | sulfide | -2 | S-2 |
| potassium | potassium | +1 | K+1 |
| bromine | bromide | -1 | Br-1 |
| phosphorus | phosphide | -3 | P-3 |
| nitrogen | nitride | -3 | N-3 |
| helium | -- | 0 | He |
| silver | silver | +1 | Ag+1 |
physical properties of ions is usually quite different than the properties of the elements. Iron is a hard blue gray metal. Fe+3 combines with oxygen to make rust a soft red material that -- not
conduct electricity.
A word on polyatomic ions: the ones that I've asked you memorize all end in ate (this ending means abundant oxygen). The polyatomics ending in -ite are the same charge as their -ate counterparts, they have 1 less oxygen in formula though.
Example NO3-1 is nitrate, but NO2-1 is nitrite.
The superscripts (little numbers above the line) are
the electrical charge.
The subscripts are the numbers of atoms in the ion for
the polyatomic ions.
Anions are negatively charged ions and cations are
positively charged ions.
Study your ions early and often. Expect a test
on them about once a week.